It all began with an idea, an idea that spawned from a documentary that he watched years ago and a random conversation with the woman who went on to become his wife.
The basic idea was that whenever there were sufficently high level fights to be had between different parties there was always the risk of destroying the planet. Everything had to be moderated and often the one with the most control of his or her damage output would be victorious.
What if using magic with a basis of science, he started terraforming planets to be used as battlegrounds or even as colony world's? For most of earth's life the magical community existed in secret with sufficiently powerful ones being recognized by their respective governments and being deployed to settle matters.
At the time many habitable planets had been discovered but they were too far away to reach even with the best technology available. That was not so for the Upper Tier Sorcerors like himself but it was just not easy to reach there. Their main job was to represent the planet on a galactic and dimensonal stage. Humans weren't alone in the universe or even the most powerful, certain sacrifices had to be made by those in power for their species to survive. This curbed most of their ambitions early but they were still there simmering in the background.
Those old monsters wouldn't let themselves be pushed back if there wasn't a sufficiently powerful force pressuring them. That part of the story is for another time though, for now, he would get back to the idea of his business. It would be called Flagranch's Planetary Emporium. Whenever there would be a high level fight to settle matters they could instead of creating a pocket dimension that could shatter at any moment or trying to moderate strength, why not buy the perfect battleground for your occasion?
Sure it would cost a pretty penny but you could go all out to your hearts content or even have a world totally your own. I mean, who wouldn't want their own planet all their own?
It was thus that the business was born, He, Marcus Flagranch would go on to do many things, have many adventures, face loss and hate, experience the glory and brutality of combat, face the cutthroat world of business monguls and eventually start an empire. Not to mention the other old monsters he was associated with in those early days. They too have their own stories but that's for another time.
So sit back and enjoy the world's to come.